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a flange

A technology of flange and conical surface, which is applied in the sealing field of the opening connection of pressure-bearing equipment, can solve the problems of large structure, vulnerable parts of the sealing system, and degradation of sealing functions, and achieve simple design technology, excellent sealing performance, and strengthened The effect of sealing performance

Active Publication Date: 2017-12-08
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] First, the structure is complex, the parts of the sealing system are vulnerable, and the operation is troublesome
[0008] Second, a high level of soldering is required
[0009]Third, the structure is huge
Such as the ordinary large flange type seal, the flange and end cover are very thick, and there is no temperature compensation adjustment
[0010] Fourth, the secondary function of sealing is degraded
With the enlargement of the device and the enhancement of environmental protection awareness, the improvement of oil quality requires the adoption of higher temperature and high pressure processes, the reduction of pressure vessels that serve as buffers and reserves in the device, and the operation of core equipment such as reactors and heat exchangers. The difficulty increases, and it is often directly affected by the fluctuation of the pressure and temperature of the fluid medium. The original sealing structure of the equipment opening is difficult to adapt to the process and management requirements of the new situation. It can be seen that the forced sealing structure of the flange with a large amount and a wide area , combined with the existing problems to improve, to develop a flange with good sealing reliability, enhanced sealing function, simple structure and high loading and unloading efficiency, which has extremely far-reaching and great significance in the field of engineering technology

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] One of the specific embodiments of a flange of the present application is used for the sealing structure of the connection between the openings of the pressure equipment components, refer to figure 2 As shown, it includes a first flange 200 with a first sealing surface, and a second flange 300 with a second sealing surface, and a sealing gasket 100 is arranged between the first sealing surface and the second sealing surface. , the first flange 200 , the sealing gasket 100 and the second flange 300 are tightly fitted under the action of fasteners, which is the structure of the flange in the prior art. The innovation of this application lies in: one technical solution is that the first sealing surface is the first tapered surface 202, and the second sealing surface is the second tapered surface 202 paired with the first sealing surface. Conical surface 302, the first flange 200 includes an outer convex step composed of the first outer ring surface 201, the first tapered ...

Embodiment 2

[0059] The second specific implementation of a flange of the present application, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanation in embodiment 1, and will not be repeated here repeat. refer to Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that, specifically, the height of the first inner ring surface 203 is equal to zero, because the first inner ring surface 203 protrudes in the axial direction of the flange, and the reduction of its height The strength of the flange will not be weakened; the height of the second inner ring 303 is equal to the height of the second outer ring 301, because the second inner ring 303 is originally lower than the second outer ring in the axial direction of the flange The increase of the height of the surface 301 is beneficial to improve the strength of the flange. The greater the taper of the sealing surfac...

Embodiment 3

[0061] The third embodiment of a flange of the present application, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment are explained in embodiment 1, and will not be repeated here repeat. refer to Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that, specifically, the diameters of the first inner ring surface 203 and the second inner ring surface 303 are larger than the diameter of the central hole 400 of the flange. Because the sealing surface is closer to the flange bolt hole 12, the gasket is more directly subjected to the compression effect transmitted by the bolt through the flange, and has better sealing performance.

[0062] Or, specifically, the sealing structure has two sealing pairs at the same time, that is, the diameters of the first inner ring surface 203 and the second inner ring surface 303 of the first sealing pair are larger than the center circle o...

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Abstract

The invention discloses a flange for a sealing structure for connection of openings of pressure-bearing equipment components. The flange comprises a first flange with a first sealing surface and a second flange with a second sealing surface, wherein a sealing gasket is arranged between the first sealing surface and the second sealing surface; the first flange, the sealing gasket and the second flange are tightly adhered under the action of a fastener. By adopting the unique structure of four flanges, torsion can be exerted to the traditional gasket due to the pairing structure of the sealing surface, the reverse torsion applied force of the gasket is represented as the improvement of elastic resilience, so that excellent reinforced sealing performance can be obtained; when a sealing system is loosened, the gasket has enough elastic resilience to continue to maintain tight adhesion with the flange sealing surface. Compared with the prior art, the flange disclosed by the invention has the advantages of forced seal, simple structure, simplicity and easiness in mounting and dismounting, facilitating of the protection of the sealing surface, short manufacture period and low cost, and is particularly suitable for the dynamic sealing of a large structure in high temperature high pressure and fluctuation work condition in comparison with other sealing structures.

Description

technical field [0001] This application relates to pressure equipment (for example: boilers, pressure vessels, heat exchangers, pressure pipes, gas storage, etc.) Bottles, etc.) opening connection sealing technology, especially suitable for high temperature and high pressure working conditions of the sealing structure or diaphragm sealing structure near the mouth forging tapered sealing surface flange. Background technique [0002] Among the existing sealing technologies for the opening connection of pressure-bearing equipment, the flange bolt forced sealing system is the most widely used one, but there are many types of flange structures, including flat welding flanges, butt welding flanges, and long neck method. Flange, wide face flange, narrow face flange, reverse flange and cylindrical end, conical end, flange, heat exchanger tube sheet, blind cover plate, and loose flange and other structures. [0003] The typical flange sealing pair structure in the prior art is as fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L23/16
CPCF16L23/032F16L23/16F16L23/18F28F9/12
Inventor 陈孙艺陈进
Owner THE CHALLENGE PETROCHEM MACHINERY CORP